title: Reply to letter: Direct real-time tracheal ultrasonography for confirmation of endotracheal tube placement: is it enough?
authors.affiliation: Department of Emergency Medicine, National Taiwan University Hospital, No. 7, Chung-Shan S. Road, Taipei 100, Taiwan. Electronic address: erichaochang@gmail.com.
authors.forename: Hao-Chang
authors.initials: HC
authors.lastname: Chou
authors.affiliation: Department of Emergency Medicine, National Taiwan University Hospital, No. 7, Chung-Shan S. Road, Taipei 100, Taiwan.
authors.forename: Matthew Huei-Ming
authors.initials: MH
authors.lastname: Ma
authors.affiliation: Department of Emergency Medicine, National Taiwan University Hospital, No. 7, Chung-Shan S. Road, Taipei 100, Taiwan.
authors.forename: Wan-Ching
authors.initials: WC
authors.lastname: Lien
mesh_terms: D016887:Cardiopulmonary Resuscitation / Q000379:methods*; D003199:Computer Systems; D005260:Female; D006801:Humans; D007442:Intubation, Intratracheal / Q000379:methods*; D008297:Male; D014132:Trachea / Q000000981:diagnostic imaging*; D014463:Ultrasonography